中国物理B ›› 2009, Vol. 18 ›› Issue (4): 1352-1356.doi: 10.1088/1674-1056/18/4/011
蔡建武1, 郑小娟2, 罗益民3
Zheng Xiao-Juan(郑小娟)a)b), Luo Yi-Min(罗益民)b), and Cai Jian-Wu(蔡建武)c)
摘要: In the system with two two-level ions confined in a linear trap, this paper presents a simple scheme to realize the quantum phase gate (QPG) and the swap gate beyond the Lamb--Dicke (LD) limit. These two-qubit quantum logic gates only involve the internal states of two trapped ions. The scheme does not use the vibrational mode as the data bus and only requires a single resonant interaction of the ions with the lasers. Neither the LD approximation nor the auxiliary atomic level is needed in the proposed scheme. Thus the scheme is simple and the interaction time is very short, which is important in view of decoherence. The experimental feasibility for achieving this scheme is also discussed.
中图分类号: (Quantum computation architectures and implementations)